Anthracite, also known as hard coal and black coal, is a hard, compact variety of coal that has a submetallic lustre. It has the highest carbon content, the fewest impurities, and the highest energy density of all types of coal and is the highest ranking of coals.

Jan 20, 2025 · Anthracite, the most highly metamorphosed form of coal and the least plentiful form. Anthracites are black to steel gray and have a brilliant, almost metallic luster. They can be polished and used for decorative purposes. They are rarely used for heating.

Anthracite is the most metamorphosed coal (though it still reflects low-grade metamorphism), with a carbon content ranging from 86 to 98 percent. The term refers to coal varieties that do not produce tarry or other hydrocarbon vapours when heated below their ignition stage.

Anthracite (“coal-like”) is a hard, very low content of volatile compact variety of coal that has a high luster. It has the highest carbon content (between 92.1% and 98%), the fewest impurities, and the highest calorific content of all types of coal, …

In this work, we clarified the molecular structure characteristics of anthracite, where the organic matter in anthracite was characterized and analyzed by industrial/elemental analysis, FTIR, XPS, XRD and solid 13 C NMR. The ratio of bridge carbon to the perimeter carbon of anthracite was 0.38, and the degree of condensation in the aromatic ...

Its clean burning properties allows anthracite to burn longer than wood, making it appealing to use in home heating stoves. Along with being clean and long burning, anthracite is used because it has a very high energy density—33 MJ/kg—the highest of any type of coal.

May 21, 2024 · Anthracite is the densest and purest form of coal and contains a high concentration of carbon and very few impurities. The relative purity of anthracite means that it burns cleanly and has a high energy density relative to other types of coal.

Jan 1, 2002 · The structure of the anthracites was determined on the basis of FTIR and XRD methods and investigations of capillary structure. Apparent density was determined by the mercury method using a vacuum apparatus, while to measure the real density, a pycnometric method with ethanol was applied.

Also referred to as "hard coal", Anthracite is a highly carbonated fossil fuel that produces the most heat of any fossil fuel on the market and is a very clean-burning fuel due to its low sulphur content. Anthracite Coal can be classified into three different grades- Ultra-High Grade, High Grade and Standard Grade.

What is Anthracite? Structure of Anthracite Coal; Composition of Anthracite Coal; Classification of Anthracite; High-Grade Forms of Anthracite; Terms Related to Anthracite; How is Anthracite Different From Bituminous? Features of Anthracite; Use of Anthracite Coal; Reserves of Anthracite in the United States; Different Forms of Anthracite Fuel